CN202316015U - Energy-saving pulverized coal grinding conveying device for boiler and furnace - Google Patents
Energy-saving pulverized coal grinding conveying device for boiler and furnace Download PDFInfo
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- CN202316015U CN202316015U CN2011204654590U CN201120465459U CN202316015U CN 202316015 U CN202316015 U CN 202316015U CN 2011204654590 U CN2011204654590 U CN 2011204654590U CN 201120465459 U CN201120465459 U CN 201120465459U CN 202316015 U CN202316015 U CN 202316015U
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- pulverized coal
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- stage grinding
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- 239000003245 coal Substances 0.000 title claims abstract description 109
- 238000000227 grinding Methods 0.000 title claims abstract description 104
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 238000005192 partition Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 15
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000000843 powder Substances 0.000 description 16
- 239000002817 coal dust Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
An energy-saving pulverized coal grinding conveying device for a boiler and a furnace comprises a machine casing installed on a machine frame and a driving shaft penetrating through the machine casing and arranged on the machine frame. A driving wheel is arranged on the driving shaft, a feed hopper is arranged on the machine casing, a first stage grinding hammer, a second stage grinding hammer, a third stage grinding hammer and an air delivery device are sequentially arranged on the driving shaft in the machine casing, a separating board is arranged between the third stage grinding hammer and the air delivery device, a pulverized coal return grinding groove is arranged between the separating board and the third stage grinding hammer, a pulverized coal separation chamber is further arranged in the machine casing, a coarse pulverized coal return pipe is arranged between the pulverized coal separation chamber and the first stage grinding hammer, and a coarse pulverized coal inlet is arranged between the coarse pulverized coal return pipe and the first stage grinding hammer. The energy-saving pulverized coal grinding conveying device for the boiler and the furnace basically removes heat loss caused by incomplete combustion of coal in the boiler and the furnace, and substantially reduces discharge of various pollutants.
Description
Technical Field
The utility model relates to a buggy grinds conveying equipment.
Background
In the equipment for processing the fuel of a boiler and a kiln, the traditional fan coal mill has the structure that: the coal pulverizer is characterized in that only one group of impellers and impact plates are arranged in a volute-shaped armor at the lower part of the coarse powder separator, after raw coal is counted into the fan coal pulverizer, a motor drives the impellers rotating at a high speed to collide with the impact plates, the coal is pulverized, air pressure generated by the impellers enters the furnace through a coal powder airflow outlet, the impellers have the coal pulverizing function and the air pressure generating function, so that the abrasion is serious, the service life is short, and the coal pulverizing efficiency is low and the coal powder quality is difficult to control.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-conserving buggy grinds conveying equipment for boiler, kiln, the reducible or aforementioned problem of avoiding of this equipment.
In order to solve the problems, the utility model provides an energy-saving pulverized coal grinding and conveying device for boilers and kilns, which comprises a machine shell arranged on a machine frame, a driving shaft which penetrates through the machine shell and is arranged on the machine frame, a driving wheel is arranged on the driving shaft, a feed hopper is arranged on the shell, a first-stage grinding hammer, a second-stage grinding hammer, a third-stage grinding hammer and an air transmission device are sequentially arranged on the driving shaft in the shell, a clapboard is arranged between the third-stage grinding hammer and the gas transmission device, a coal powder grinding-back groove is arranged between the clapboard and the third-stage grinding hammer, the casing is further provided with a pulverized coal sorting chamber, a coarse pulverized coal return pipe is arranged between the pulverized coal sorting chamber and the first-stage grinding hammer, and a coarse pulverized coal inlet is arranged between the coarse pulverized coal return pipe and the first-stage grinding hammer.
Preferably, one side of the coarse coal powder return pipe, which is close to the coal powder sorting chamber, is provided with an adjusting plate and an adjusting screw connected with the adjusting plate.
Preferably, the first-stage grinding hammer comprises a first hammer body fixedly connected to the driving shaft and a rectangular hammer head fixedly connected to the outer side of the first hammer body; the second-stage grinding hammer comprises a second hammer body fixedly connected to the driving shaft, a hammer head support frame fixedly connected to the outer side of the second hammer body, and a cylindrical quadrangular hammer head rotatably connected with the hammer head support frame; the third-stage grinding hammer comprises a third hammer body fixedly connected to the driving shaft, a hammer head base fixedly connected to the outer side of the third hammer body, a hammer head support rotatably connected to the hammer head base, and a cylindrical quadrangular hammer head rotatably connected to the hammer head support.
Preferably, the feed hopper is provided with an iron removal device.
Preferably, the feed hopper is provided with a coal supply control device.
Preferably, the casing is provided with an air inlet control device at one side close to the feed hopper.
The utility model provides an energy-conserving buggy grinds conveying equipment for boiler, kiln grinds the coal cinder through the high-speed rotatory grinding hammer of three groups, again through once grinding, once select separately back to grind for raw coal is ground, is pressed, is hit, is made the quadbit in tertiary grinding. Raw coal can be ground into combustible mixed coal powder meeting the use requirements of various working conditions, and the coal particles can be as fine as more than 6000 meshes. It is applicable to almost all kinds of coal, including bituminous coal, anthracite, lignite, etc. The produced fine coal powder can be fully and cleanly combusted, no black smoke is discharged, the heat loss caused by incomplete combustion of coal in a boiler and a kiln is basically eliminated, and the discharge of various pollutants is greatly reduced. Therefore, the utilization efficiency of the raw coal is greatly improved, and the cost of the raw coal is saved.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural diagram of an energy-saving pulverized coal grinding and conveying device for boilers and kilns according to an embodiment of the present invention;
FIG. 2 is a partial schematic structural diagram of a first stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1;
FIG. 3 is a partial schematic structural diagram of a second stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1;
fig. 4 is a partial structural schematic diagram of a third-stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in fig. 1.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The structure and the principle of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns according to the utility model are described in detail with reference to the attached drawings.
Fig. 1 is a schematic structural diagram of an energy-saving pulverized coal grinding and conveying device for boilers and kilns according to an embodiment of the present invention. As shown in figure 1, the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns provided by the utility model, which comprises a machine shell 2 arranged on a machine frame 1, a driving shaft 3 which penetrates through the machine shell 2 and is arranged on the machine frame 1, a driving wheel 4 is arranged on the driving shaft 3, a feed hopper 5 is arranged on the shell 2, a first-stage grinding hammer 6, a second-stage grinding hammer 7, a third-stage grinding hammer 8 and an air delivery device 9 are sequentially arranged on the driving shaft 3 in the casing 2, a partition plate 10 is arranged between the third-stage grinding hammer 8 and the gas transmission device 9, a pulverized coal grinding groove 11 is arranged between the partition plate 10 and the third-stage grinding hammer 8, the casing 2 is further provided with a pulverized coal sorting chamber 12, a coarse pulverized coal return pipe 13 is arranged between the pulverized coal sorting chamber 12 and the first-stage grinding hammer 6, a coarse coal powder inlet 131 is arranged between the coarse coal powder return pipe 13 and the first-stage grinding hammer 6.
The driving wheel 4 rotates the driving shaft 3, and thus the first stage grinding hammer 6, the second stage grinding hammer 7, the third stage grinding hammer 8, and the gas transmission device 9 are rotated at a high speed. The power of the flowing of the pulverized coal is driven by the negative pressure generated by the operation of the gas transmission device 9 rotating at a high speed, and the gas transmission device 9 can be a fan.
After raw coal is crushed into crushed coal blocks with the diameter less than 2 cm, the crushed coal blocks are conveyed into the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns through the feed hopper 5, and are subjected to primary grinding by the primary grinding hammer 6 to form pulverized coal; then further secondary grinding is performed by the secondary grinding hammer 7; and then the gas coal powder is subjected to superfine grinding by the third-stage grinding hammer 8. After primary separation is carried out on gaseous coal dust through a coal dust regrinding groove 11, unqualified part flows back to the third-stage grinding hammer 8 from the coal dust regrinding groove 11 for secondary grinding, qualified part enters a conveying chamber 91 through a partition plate channel 101 between the partition plate 10 and the driving shaft 3 and is conveyed to the coal dust separation chamber 12 through the gas conveying device 9, the qualified part enters the coal dust separation chamber 12 from a separation chamber channel 121, a separation partition plate 122 is arranged at an outlet of the separation chamber channel 121, secondary separation is carried out on the coal dust entering the coal dust separation chamber 12 from the separation chamber channel 121 through the separation partition plate 122, a very small amount of non-gasified coarse coal particles filtered after secondary separation through the separation partition plate 122 enter a coarse coal dust return pipe 13, and then the coarse coal dust returns to the first-stage grinding hammer 6 for secondary grinding through a coarse coal dust inlet 131. The fine coal powder which is qualified after secondary sorting by the separation clapboard 122 is sent to a combustion chamber of a boiler or a kiln for combustion by a pipeline through a coal gas outlet channel 123. The gas outlet channel 123 can also be connected with a gas control device 14 through a pipeline, the gas control device 14 can include an air outlet control device for controlling the delivery of mixed gas consisting of pulverized coal and air to the combustion chambers of the boiler and the kiln, and a gas mixed concentration tester for testing the concentration of the pulverized coal in the mixed gas, so that the gas mixing device 14 can further monitor the concentration of the pulverized coal in the mixed gas according to the combustion requirements of the boiler and the kiln, control the flow and the pressure of the output of the mixed gas, and deliver the mixed gas meeting the combustion requirements to the combustion chambers of the boiler and the kiln for combustion.
In a preferred embodiment, the coarse coal powder return pipe 13 is provided with an adjusting plate 132 and an adjusting screw 133 connected to the adjusting plate 132 on a side close to the coal powder sorting chamber 12. Thus, the flow rate of the pulverized coal is controlled by adjusting the opening and closing degree of the adjusting plate 132 via the adjusting screw 133.
FIG. 2 is a partial schematic structural diagram of a first stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1; FIG. 3 is a partial schematic structural diagram of a second stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in FIG. 1; fig. 4 is a partial structural schematic diagram of a third-stage grinding hammer of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns shown in fig. 1. Referring to fig. 1-4, in a preferred embodiment, the first stage grinding hammer 6 comprises a first body 61 fixedly attached to the drive shaft 3 and a rectangular ram head 62 fixedly attached to the outside of the first body; the second-stage grinding hammer 7 comprises a second hammer body 71 fixedly connected to the driving shaft 3, a hammer head support frame 72 fixedly connected to the outer side of the second hammer body 71, and a cylindrical quadrangular hammer head 73 rotatably connected with the hammer head support frame 72; the third-stage grinding hammer 8 comprises a third hammer body 81 fixedly connected to the driving shaft 3, a hammer head base 82 fixedly connected to the outer side of the third hammer body 81, a hammer head bracket 83 rotatably connected to the hammer head base 82, and a cylindrical quadrangular hammer head 73 rotatably connected to the hammer head bracket 83.
The first, second, and third hammer bodies 61, 71, 81 may be flanges fixedly connected to the drive shaft 3.
The rectangular hammer head 62 can be a fixed rectangular manganese steel plate subjected to high-temperature wear-resistant treatment; this can satisfy the strength requirement of the primary pulverization.
The hammer head support frame 72 is fixedly connected to the outer side of the second hammer body 71, the cylindrical quadrangular prism-shaped hammer head 73 is rotatably connected with the hammer head support frame 72, the cylindrical quadrangular prism-shaped hammer head 73 can be cylindrical quadrangular high-temperature wear-resistant manganese steel, and when the second hammer body 71 is driven by the driving shaft 3 to rotate at a high speed, the cylindrical quadrangular prism-shaped hammer head 73 can rotate at a high speed around a mounting shaft in the grinding process, so that the grinding capacity of the second-stage grinding hammer 7 can be further enhanced.
The hammer head base 82 is fixedly connected to the outer side of the third hammer body 81, the hammer head support 83 is rotatably connected to the hammer head base 82, the hammer head support 83 can rotate around the mounting shaft, the cylindrical quadrangular-prism-shaped hammer head 73 is rotatably connected to the hammer head support 83, the cylindrical quadrangular-prism-shaped hammer head 73 can rotate around the mounting shaft, when the third hammer body 81 is driven by the driving shaft 3 to rotate at a high speed, on one hand, the cylindrical quadrangular-prism-shaped hammer head 73 can rotate around the mounting shaft at a high speed in the grinding process, and on the other hand, the hammer head support 83 can also rotate around the mounting shaft of the third-stage grinding hammer 8 and the mounting shaft of the hammer head base 82 at a high speed, so that the grinding capacity of the third.
And return impact lining plates 15 are fixedly arranged at positions corresponding to the first-stage grinding hammer 6, the second-stage grinding hammer 7 and the third-stage grinding hammer 8 in the shell, and certain gaps are reserved between the hammers at each stage and the return impact lining plates 15. Therefore, when the hammers at all stages rotate at high speed, the pulverized coal is impacted at high speed between the hammers and the impact-back lining plate 15, and the grinding capacity is improved. And the impact-back lining plate 15 can be matched with the corresponding grinding hammer to flexibly adopt materials and shapes without strength, so that the crushing capability of the grinding hammers at all levels on the pulverized coal can be conveniently controlled, and meanwhile, the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns can be conveniently maintained.
In a preferred embodiment, the feed hopper 5 is provided with an iron removal device 51. The iron removing device can adsorb and remove metal impurities in the coal blocks conveyed by the feed hopper 5, so that damage to energy-saving pulverized coal grinding and conveying equipment for boilers and kilns is avoided.
In a preferred embodiment, the feed hopper 5 is provided with a coal supply control device 52. The coal supply control device 52 can be a valve or a packing auger controlled by a variable frequency motor, so that the flow of the coal blocks entering the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns can be controlled according to the requirement of the coal gas yield.
In a preferred embodiment, the housing 2 is provided with an air inlet control device 16 on a side close to the feeding hopper 5. The air inlet control device 16 can be an air door controlled by a limit switch, so that the working flow rate of pulverized coal and the concentration of coal gas can be conveniently and flexibly controlled by controlling the air inlet amount of the energy-saving pulverized coal grinding and conveying equipment for boilers and kilns.
The utility model provides an energy-conserving buggy grinds conveying equipment for boiler, kiln grinds the coal cinder through the high-speed rotatory grinding hammer of three groups, again through once grinding, once select separately back to grind for raw coal is ground, is pressed, is hit, is made the quadbit in tertiary grinding. Raw coal can be ground into combustible mixed coal powder meeting the use requirements of various working conditions, the coal particles can be as fine as more than 6000 meshes, and the coal is almost suitable for all coal types including bituminous coal, anthracite, lignite and the like. The produced fine coal powder can be fully and cleanly combusted, no black smoke is discharged, the heat loss caused by incomplete combustion of coal in a boiler and a kiln is basically eliminated, and the discharge of various pollutants is greatly reduced. Therefore, the utilization efficiency of the raw coal is greatly improved, and the cost of the raw coal is saved.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (6)
1. An energy-saving pulverized coal grinding and conveying device for boilers and kilns comprises a machine shell installed on a rack, a driving shaft penetrating through the machine shell and arranged on the rack, a driving wheel is arranged on the driving shaft, a feeding hopper is arranged on the machine shell, a first-stage grinding hammer, a second-stage grinding hammer, a third-stage grinding hammer and a gas conveying device are sequentially arranged on the driving shaft in the machine shell, and the energy-saving pulverized coal grinding and conveying device is characterized in that a partition plate is arranged between the third-stage grinding hammer and the gas conveying device, a pulverized coal grinding groove is arranged between the partition plate and the third-stage grinding hammer, the machine shell is further provided with a pulverized coal sorting chamber, a coarse pulverized coal return pipe is arranged between the pulverized coal sorting chamber and the first-stage grinding hammer, and a coarse pulverized coal inlet is arranged between the coarse pulverized coal return pipe and the first-stage grinding hammer.
2. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein an adjusting plate and an adjusting screw connected with the adjusting plate are arranged on one side of the coarse pulverized coal return pipe close to the pulverized coal sorting chamber.
3. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the first-stage grinding hammer comprises a first hammer body fixedly connected to the driving shaft and a rectangular hammer head fixedly connected to the outer side of the first hammer body; the second-stage grinding hammer comprises a second hammer body fixedly connected to the driving shaft, a hammer head support frame fixedly connected to the outer side of the second hammer body, and a cylindrical quadrangular hammer head rotatably connected with the hammer head support frame; the third-stage grinding hammer comprises a third hammer body fixedly connected to the driving shaft, a hammer head base fixedly connected to the outer side of the third hammer body, a hammer head support rotatably connected to the hammer head base, and a cylindrical quadrangular hammer head rotatably connected to the hammer head support.
4. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the feed hopper is provided with an iron removal device.
5. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the feed hopper is provided with a coal supply control device.
6. The energy-saving pulverized coal grinding and conveying equipment for boilers and kilns as claimed in claim 1, wherein the casing is provided with an air inlet control device at one side close to the feed hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654590U CN202316015U (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding conveying device for boiler and furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654590U CN202316015U (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding conveying device for boiler and furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202316015U true CN202316015U (en) | 2012-07-11 |
Family
ID=46428017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204654590U Expired - Fee Related CN202316015U (en) | 2011-11-22 | 2011-11-22 | Energy-saving pulverized coal grinding conveying device for boiler and furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202316015U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071570A (en) * | 2013-01-18 | 2013-05-01 | 杨建川 | Grinding chamber device of deflagration machine |
| CN103104930A (en) * | 2013-03-06 | 2013-05-15 | 湖南高翔重工科技有限公司 | High-mesh pulverized coal atomizing device |
| CN104383980A (en) * | 2014-10-16 | 2015-03-04 | 贵州良济药业有限公司 | Traditional Chinese medicine crushing and screening apparatus |
| CN104383981A (en) * | 2014-10-16 | 2015-03-04 | 贵州良济药业有限公司 | Traditional Chinese medicine preparation apparatus |
| CN104437754A (en) * | 2014-10-16 | 2015-03-25 | 贵州良济药业有限公司 | Crushing and sieving integrated equipment for medicinal raw materials |
| CN105737183A (en) * | 2016-01-28 | 2016-07-06 | 徐海慧 | Novel environment-friendly purification boiler for thermal power plant |
| CN107876180A (en) * | 2017-12-10 | 2018-04-06 | 无锡汇欧陶瓷有限公司 | A kind of efficient ceramic raw material reducing mechanism of small size |
| CN108325684A (en) * | 2018-03-08 | 2018-07-27 | 国家粮食局科学研究院 | A high-efficiency coal grinding and coal injection machine |
-
2011
- 2011-11-22 CN CN2011204654590U patent/CN202316015U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071570A (en) * | 2013-01-18 | 2013-05-01 | 杨建川 | Grinding chamber device of deflagration machine |
| CN103071570B (en) * | 2013-01-18 | 2015-04-01 | 杨建川 | Grinding chamber device of deflagration machine |
| CN103104930A (en) * | 2013-03-06 | 2013-05-15 | 湖南高翔重工科技有限公司 | High-mesh pulverized coal atomizing device |
| CN103104930B (en) * | 2013-03-06 | 2015-12-16 | 湖南高翔重工科技有限公司 | A kind of high order breeze atomizing device |
| CN104383980A (en) * | 2014-10-16 | 2015-03-04 | 贵州良济药业有限公司 | Traditional Chinese medicine crushing and screening apparatus |
| CN104383981A (en) * | 2014-10-16 | 2015-03-04 | 贵州良济药业有限公司 | Traditional Chinese medicine preparation apparatus |
| CN104437754A (en) * | 2014-10-16 | 2015-03-25 | 贵州良济药业有限公司 | Crushing and sieving integrated equipment for medicinal raw materials |
| CN104383980B (en) * | 2014-10-16 | 2016-08-24 | 贵州良济药业有限公司 | Screening plant pulverized by a kind of Chinese medicine |
| CN104437754B (en) * | 2014-10-16 | 2016-08-24 | 贵州良济药业有限公司 | A kind of medicine material crushes and screens equipment integrating |
| CN105737183A (en) * | 2016-01-28 | 2016-07-06 | 徐海慧 | Novel environment-friendly purification boiler for thermal power plant |
| CN107876180A (en) * | 2017-12-10 | 2018-04-06 | 无锡汇欧陶瓷有限公司 | A kind of efficient ceramic raw material reducing mechanism of small size |
| CN108325684A (en) * | 2018-03-08 | 2018-07-27 | 国家粮食局科学研究院 | A high-efficiency coal grinding and coal injection machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121122 |